Well, no luck so far in finding the Lojack device. I found a bunch of pictures of different possible units that it might be, but it's totally unpredictable where it was placed. I need to get the car up on a lift to inspect the underbody. I also left a query on the Lojack customer support site.

The other news is the parasitic draw has gone down (for no apparent reason) from the 0.2 I was getting before to 0.03 to 0.04 amps now, which I think might be normal for this (or any?) car. Any information on what is normal? This THREAD supports it is in normal range. But why the earlier .2 amp draw?

Also, the "C-shaped spacers mentioned above appear intact and untouched.